Give one cause of World War I. Explain what it is and how it led to the war.

One cause of World War l was the assassination with   Austrian Archduke Franz Ferdinand

Explanation: After that you had in July 28 - Austria who declared war on Serbia then in August 1- you had Germany which had or as  Austria ally that declared war on Russia, who was ally of Serbia. and so on with Germany that declared war on France, great Britain (ally of France, that declared war against Germany. Then at the time President Wilson declares United States will remain neutral.

in 550 b.c.e. cyrus the great, the leader of the persians, conquered the medes and united the iranian people under one ruler for the first time. cyrus became the first king of the persian empire and went on to establish one of the largest empires in world.

i dont know but i need points